Iterating List of list

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Hi,I have list of list of characters with me.How shuld i parse it.I am able to print individual columns by array opertaor.But can i use iterator to iterate through each field validate it andthen print it?Raghu

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You can directly access the column and check everything at once or you can u=
se ‘each’ to iterate over it. You probably want to directly access for a vec=
torized approach. What does your validate code look like?